The brightness of a bulb depends on current and voltage. So in parallel circuits, although voltage is the same, the current received by light bulbs is divided. So why do we say
![thermodynamics - Why does the characteristic curve (V vs I) for a light bulb backbend? - Physics Stack Exchange thermodynamics - Why does the characteristic curve (V vs I) for a light bulb backbend? - Physics Stack Exchange](https://i.stack.imgur.com/oEX61.png)
thermodynamics - Why does the characteristic curve (V vs I) for a light bulb backbend? - Physics Stack Exchange
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Practical electricity for beginners. Fig. 19. A 1.5-volt lamp con-nected to a 1.5-volt source ofpressure, a dry cell. 33. The Meaning of the Mark on a Battery Lamp.A battery lamp is
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